BULA Knit Essential acrylic hats are knit from 100% acrylic high bulk yarn. These hats are warm, lightweight and offer a soft wool like feel without the price tag. Our acrylic hats are stain and UV resistant and machine washable. The vibrant colours and wide style range is a BULA signature. All the linings in this program are Polartec 100% Polyester Micro Fleece for added warmth, comfort and wicking.